Fig. 1

Chemiosmotic mechanism of oxidative phosphorylation in mitochondria to form adenosine triphosphate (ATP). ADP: adenosine diphosphate, FeS: iron sulfide protein, FMN: flavin mononucleotide, NAD⁺: nicotinamide adenine dinucleotide, NADH: reduced nicotinamide adenine dinucleotide, Q: ubiquinone. (Reuse from Guyton and Hall Textbook of Medical Physiology 14th ed. with permission from Elsevier B.V.)